[PR PATCH] doxygen: fix build for gcc 12

[oreo639 <oreo639@users.noreply.github.com>]

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There is a new pull request by oreo639 against master on the void-packages repository

https://github.com/oreo639/void-packages doxygen
https://github.com/void-linux/void-packages/pull/38846

doxygen: fix build for gcc 12
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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/38846.patch is attached

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From 8c014df521e69fbda31147d3ed414aa89129053c Mon Sep 17 00:00:00 2001
From: oreo639 <31916379+Oreo639@users.noreply.github.com>
Date: Mon, 22 Aug 2022 22:31:03 -0700
Subject: [PATCH] doxygen: fix build for gcc 12

---
 srcpkgs/doxygen/patches/compat-gcc12.patch | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 srcpkgs/doxygen/patches/compat-gcc12.patch

diff --git a/srcpkgs/doxygen/patches/compat-gcc12.patch b/srcpkgs/doxygen/patches/compat-gcc12.patch
new file mode 100644
index 000000000000..666744a1dceb
--- /dev/null
+++ b/srcpkgs/doxygen/patches/compat-gcc12.patch
@@ -0,0 +1,22 @@
+From 5198966c8d5fec89116d025c74934ac03ea511fa Mon Sep 17 00:00:00 2001
+From: Dimitri van Heesch <doxygen@gmail.com>
+Date: Fri, 6 May 2022 09:55:16 +0200
+Subject: [PATCH] issue #9312: Build: cache.h:53:14: error: 'exchange' is not a
+ member of 'std'
+
+---
+ src/cache.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/cache.h b/src/cache.h
+index 0ff3092ed5..e218eb27d2 100644
+--- a/src/cache.h
++++ b/src/cache.h
+@@ -19,6 +19,7 @@
+ #include <list>
+ #include <unordered_map>
+ #include <mutex>
++#include <utility>
+ #include <ctype.h>
+ 
+ /*! Fixed size cache for value type V using keys of type K.